Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
72,294,632
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 3,311,614
2 linkedin.com 425,042
3 twitter.com 408,689
4 amazon.com 178,434
5 namu.wiki 141,770
6 facebook.com 133,490
7 instagram.com 124,983
8 x.com 118,438
9 allocine.fr 102,178
10 deezer.com 56,493
11 youtube.com 42,472
12 google.com 34,514
13 wiktionary.org 32,621
14 isfdb.org 28,736
15 trustpilot.com 22,229
16 britannica.com 21,286
17 yahoo.com 19,939
18 legacy.com 19,127
19 gutenberg.org 18,532
20 reddit.com 16,669
21 crunchbase.com 15,973
22 dictionary.com 14,460
23 fandom.com 10,352
24 microsoft.com 9,947
25 wikiquote.org 9,732
26 metacritic.com 9,579
27 tiktok.com 8,674
28 apple.com 8,278
29 rottentomatoes.com 7,978
30 uk.com 7,897
31 famousbirthdays.com 7,420
32 espn.com 6,448
33 letterboxd.com 6,450
34 indeed.com 6,293
35 quora.com 5,985
36 pinterest.com 5,983
37 github.com 5,947
38 webuy.com 5,888
39 justwatch.com 5,808
40 imdb.com 5,718
41 fifa.com 5,612
42 forbes.com 5,317
43 wikia.com 5,255
44 mit.edu 4,985
45 vikidia.org 4,831
46 history.com 4,770
47 netflix.com 4,713
48 reuters.com 4,695
49 house.gov 4,648
50 spotify.com 4,544
51 plus.lefigaro.fr 4,538
52 premiere.fr 4,496
53 wikiwand.com 4,489
54 nintendo.com 4,357
55 bbc.co.uk 4,099
56 theguardian.com 4,084
57 bloomberg.com 4,078
58 cambridge.org 4,023
59 awards.com 4,008
60 investing.com 3,850
61 ca.gov 3,813
62 last.fm 3,806
63 soundcloud.com 3,758
64 linkedin.cn 3,746
65 meta.com 3,606
66 dell.com 3,553
67 vocabulary.com 3,420
68 bbc.com 3,250
69 thesaurus.com 3,237
70 ign.com 3,235
71 baseball-almanac.com 3,216
72 coach.com 3,081
73 billboard.com 3,077
74 playstation.com 3,015
75 go.com 2,952
76 shopee.co.id 2,938
77 nih.gov 2,922
78 bio-on.it 2,917
79 treated.com 2,900
80 nasa.gov 2,891
81 google.com.br 2,686
82 example.com 2,604
83 a-artist.com 2,539
84 discovery.ca 2,526
85 radiofrance.fr 2,507
86 hotels.com 2,478
87 genius.com 2,449
88 rs-online.com 2,424
89 rateyourmusic.com 2,403
90 inc.com 2,390
91 wikisource.org 2,391
92 dailymail.co.uk 2,358
93 unesco.org 2,345
94 shopee.ph 2,332
95 chess.com 2,315
96 washington.edu 2,277
97 diesel.com 2,237
98 notrecinema.com 2,226
99 oracle.com 2,194
100 televisionacademy.com 2,188
101+ 62,102 additional niche-specific domains in full dataset covering 66,667,972 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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